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Mapping and Functional Characterization of HOX Gene Expression Patterns in Human Normal Tissue and Solid Tumors
Mapping and Functional Characterization of HOX Gene Expression Patterns in Human Normal Tissue and Solid Tumors
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151035
- ISBN
- 9798383565940
- DDC
- 575
- 저자명
- Kurbatov, Vadim.
- 서명/저자
- Mapping and Functional Characterization of HOX Gene Expression Patterns in Human Normal Tissue and Solid Tumors
- 발행사항
- [Sl] : Yale University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 117 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
- 주기사항
- Advisor: Lu, Jun.
- 학위논문주기
- Thesis (Ph.D.)--Yale University, 2024.
- 초록/해제
- 요약HOX genes, fundamental in directing embryonic development, are implicated in the spatial organization of tissues. Their influence, traditionally investigated during early developmental stages, has been noted in a wide variety of malignant processes, albeit at a single gene level in the context of individual cancer types. Given that the HOX genes represent a complex and interrelated network, a unified model evaluating the role of the entire set of HOX genes in cancer has not yet been achieved. Similarly, an overarching model that considers HOX gene patterns in multiple cancer types is absent.This study aims to discover the pattern of HOX gene expression in human adult tissues and cancer, and to evaluate their function in vitro. To systematically investigate the expression of HOX genes across a broad spectrum of human adult tissues and to assess their involvement in the cancer biology, we sought to map the landscape of HOX gene expression, exploring how these developmental genes are repurposed. Performing computational analyses of gene expression data from the GTEx and TCGA datasets, along with targeted CRISPR-Cas9 and CRISPR activation (CRISPRa) screens, we sought to understand the functional implications of HOX gene expression.Our study unveiled distinctive HOX gene expression patterns across human adult tissues, confirming their continued role beyond embryonic development. Notably, a pattern emerged showing many cancers exhibiting a shift towards HOX expression profiles characteristic of normal posterior body tissues, a phenomenon we refer to as posteriorization. We found posteriorization to be associated with higher tumor grade and worse survival outcomes across a spectrum of cancer types.Experimentally, the functional significance of HOX genes in cancer was further explored using CRISPR-Cas9 loss-of-function (LOF) and CRISPRa gain-of-function (GOF) screens. These screens targeted specific HOX genes to assess their impact on cell viability in several cancer cell lines. The LOF screen demonstrated cell-line-specific responses to HOX paralog group disruption, providing evidence of both suppressive and advantageous effects on cancer cell viability. Additionally, the GOF screen provided insights into how overexpression of certain HOX genes can suppress cancer cell growth, depending on the cellular context. These findings show that the roles of HOX genes in cancer is context-dependent and can vary between different tumor types.Our investigation focuses on the expression patterns of HOX genes in adult human tissues and their reprogramming in cancer. The discovery of posteriorization across various solid tumors demonstrates the impact of developmental gene expression patterns on cancer biology. Furthermore, our experimental findings highlight the importance of context in the regulation and effects of HOX genes in malignancy. By advancing our understanding of cancer through the lens of developmental biology, our work paves the way for potentially novel approaches to cancer diagnosis and treatment that exploit the dysregulation of HOX genes.
- 일반주제명
- Genetics
- 일반주제명
- Medicine
- 일반주제명
- Cellular biology
- 일반주제명
- Oncology
- 일반주제명
- Developmental biology
- 키워드
- Cancer
- 키워드
- HOX genes
- 키워드
- Gene expression
- 키워드
- Posteriorization
- 기타저자
- Yale University Investigative Medicine
- 기본자료저록
- Dissertations Abstracts International. 86-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211151035
■006m o d
■007cr#unu||||||||
■020 ▼a9798383565940
■035 ▼a(MiAaPQ)AAI30997567
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a575
■1001 ▼aKurbatov, Vadim.
■24510▼aMapping and Functional Characterization of HOX Gene Expression Patterns in Human Normal Tissue and Solid Tumors
■260 ▼a[Sl]▼bYale University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a117 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-02, Section: B.
■500 ▼aAdvisor: Lu, Jun.
■5021 ▼aThesis (Ph.D.)--Yale University, 2024.
■520 ▼aHOX genes, fundamental in directing embryonic development, are implicated in the spatial organization of tissues. Their influence, traditionally investigated during early developmental stages, has been noted in a wide variety of malignant processes, albeit at a single gene level in the context of individual cancer types. Given that the HOX genes represent a complex and interrelated network, a unified model evaluating the role of the entire set of HOX genes in cancer has not yet been achieved. Similarly, an overarching model that considers HOX gene patterns in multiple cancer types is absent.This study aims to discover the pattern of HOX gene expression in human adult tissues and cancer, and to evaluate their function in vitro. To systematically investigate the expression of HOX genes across a broad spectrum of human adult tissues and to assess their involvement in the cancer biology, we sought to map the landscape of HOX gene expression, exploring how these developmental genes are repurposed. Performing computational analyses of gene expression data from the GTEx and TCGA datasets, along with targeted CRISPR-Cas9 and CRISPR activation (CRISPRa) screens, we sought to understand the functional implications of HOX gene expression.Our study unveiled distinctive HOX gene expression patterns across human adult tissues, confirming their continued role beyond embryonic development. Notably, a pattern emerged showing many cancers exhibiting a shift towards HOX expression profiles characteristic of normal posterior body tissues, a phenomenon we refer to as posteriorization. We found posteriorization to be associated with higher tumor grade and worse survival outcomes across a spectrum of cancer types.Experimentally, the functional significance of HOX genes in cancer was further explored using CRISPR-Cas9 loss-of-function (LOF) and CRISPRa gain-of-function (GOF) screens. These screens targeted specific HOX genes to assess their impact on cell viability in several cancer cell lines. The LOF screen demonstrated cell-line-specific responses to HOX paralog group disruption, providing evidence of both suppressive and advantageous effects on cancer cell viability. Additionally, the GOF screen provided insights into how overexpression of certain HOX genes can suppress cancer cell growth, depending on the cellular context. These findings show that the roles of HOX genes in cancer is context-dependent and can vary between different tumor types.Our investigation focuses on the expression patterns of HOX genes in adult human tissues and their reprogramming in cancer. The discovery of posteriorization across various solid tumors demonstrates the impact of developmental gene expression patterns on cancer biology. Furthermore, our experimental findings highlight the importance of context in the regulation and effects of HOX genes in malignancy. By advancing our understanding of cancer through the lens of developmental biology, our work paves the way for potentially novel approaches to cancer diagnosis and treatment that exploit the dysregulation of HOX genes.
■590 ▼aSchool code: 0265.
■650 4▼aGenetics
■650 4▼aMedicine
■650 4▼aCellular biology
■650 4▼aOncology
■650 4▼aDevelopmental biology
■653 ▼aCancer
■653 ▼aHOX genes
■653 ▼aGene expression
■653 ▼aHuman adult tissues
■653 ▼aPosteriorization
■690 ▼a0369
■690 ▼a0564
■690 ▼a0379
■690 ▼a0992
■690 ▼a0758
■71020▼aYale University▼bInvestigative Medicine.
■7730 ▼tDissertations Abstracts International▼g86-02B.
■790 ▼a0265
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160532▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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